12z/7-42=21-3z/7

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Solution for 12z/7-42=21-3z/7 equation:



12z/7-42=21-3z/7
We move all terms to the left:
12z/7-42-(21-3z/7)=0
We add all the numbers together, and all the variables
12z/7-(-3z/7+21)-42=0
We get rid of parentheses
12z/7+3z/7-21-42=0
We multiply all the terms by the denominator
12z+3z-21*7-42*7=0
We add all the numbers together, and all the variables
15z-441=0
We move all terms containing z to the left, all other terms to the right
15z=441
z=441/15
z=29+2/5

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